Marshall McLuhan (1911-1980) was a Canadian academic whose work on electronic media in the 60s has come to resonate in the digital age. This video is narrated by Alex Chow, one of the leaders of the 2014 Hong Kong Umbrella movement whose mass street occupation was mobilised and reported via social media.

It was commissioned by Al Jazeera for the interactive series, Media Theorized. The music, which is pretty great in and of itself in a Blade Runner way, is Gelis by Flako.

From Vox: "Christopher Nolan's Dunkirk is a nerve-wracking movie [...] A lot of that feeling has to do with how the film's score uses Shepard tones — layered sound waves that simulate a constant ascent in tone — to create a sensation of building tension."